Sash lock



Patented Sept. 7, 1926. *j

elses@ MST "0F Dawson; meenam sass: Loox.

y.llrrlai'c ima vfiled Qctobr .23, 122.5. :Serin-No. 64.3210.v

.My invention relatesda new and 1 useimprovementhin .a ,sash lock `andhas for tsoliect tliefellovision QfasaSh lock, adapted. for useavith.wijndojwvsashes slidably moimted" '..franieswgwhicli wilhbe simpleinit-radura @Gegenteil (italiane-facture and highly @iraient-.iin useAnother object of the invention is th'e the mounting of the lock on theframe withv which used. f

Other objects will appear hereinafter.

The invention consists inthe combination and arrangement of partshereinafter describedand claimed. f

The invention will be best understood from a reference to theaccompanying drawings,` which form a part of this specification and inwhich,

Fig. 1 is a side elevational view ofthe invention, mounted on a windowsash, showing parts in section, 4 v v Fig. 2 is a sectional view takenon subj stantially line 2-2 of Fig. 1,l

Fig. 3 is a rea-r elevational view of the j locking mechanism used intheinvention,

vFig 4 is an elevational view of the sash in fragment preparedy formounting the locking mechanism thereon. l

' As shown in the drawings, the invention is adapted for use with awindow sash9, slidably mounted in a` windowv frame 10. Mounted on thefacer of the windowfram'e whichV faces the sash 9 is bar 1l, having aplurality of shoulders 12 formed thereon. In mounting the device on thesash 9, the sash 9 is firstvk provided withk aA circular j recess 13,which is formed byA drilling, with the conventional size of window lusedin railway carriages and the like, a hole one and yone quarter inch indiameter and one quarter of an inc-h deep. Formed in the window sash isa passage v14., which is drilled transversely thereof andcommunicateswith the hole 13, and also, With'an enlargedrecess 15 formed in theface'of the window sash. l Mounted inv the recessV 15 is a circular`guide 16 having 'aj bore 17 formed rone of the shoulders 12.

therein, said bore being .preferably Square.

lDi/ojlectingoutwardly from Vthe guide 116,

atqoo JositeA sides. are winO's 18 and 19 which vare secured Itothe sash9 by screws rvor other 'suitable means, A lock Yplate 20 is vprovidedland secured-by screwstZL- or kother suitable inc aiis, to ,oner face ofthe sash I9,

a fiange 22 extending `at right'angles `to theplate 20vand engagingoneedge of the rail ofethe `window sash 9. lProjectingr ontwardly from theinner .face ofthe vplate 20 is,astiid 2 3),l upon which isVV pivotallymount-l ed an operating arm 221, having the angularly turnedr port-ion25, the arrangement comprising a bell crank with an elongated operatingarm.` Pivotally connected at one end to the end of the Aarm 25, is abolt 26, which engages in the passage 14 and projects through the recess15 and beyond the face of the sash- 9, when in operative position, theportion' 27 projecting through the guide 1G being square in crosssection and reduced in size from the remainder.

Mounted on a stud 29, projecting from thev inner `face of the plate 2Ois a spring 28,V

which is adapted for rocking the arm 25 into position for projecting thereduced portion 27 of the bolt into engagement with Projecting outwardlyfrom the plate 20 is a stationary raising arm 80. y

In operation, when it is desired to raise the window, the arm 24- isbrought into closer relation to the frame 30, as shown in dotted vlinesin Fig. 1, so as to retract the portion 27 of the bolt within the guide16. When the window is raised or lowered to the desired position, arelease of the arm 24 will permit the spring 28 to effect the outwardmovement of the bolt to en`- gage theshoulders 12. y

In mounting the device, the recess 13 is formed as well as the passage14, and the bolt 26 slid into the passage .14, the arm 25 engaging inthe recess 18. It is, therefore, believed evident that the mounting ofthe device upon a window sash is a simple operation, easy of performanceywith the labor reduced toa minimum.

While I have illustrated and described of structure shown, but desire toavail myself of such variations and modifications as come Within thescope of the appended j Having thus described my invent-ion7 what lclaim as new and desire to secure by Letters Patent is:

A sash lock of the class described, adapted for mounting on a windowsash, slidably mounted in a window :trame and comprising: a loch plate;a I'iange on said plate at one end thereof, extending at right anglesthereto, said plate being adapted for mounting on one face of a rail ofsaid window sash and said flange engaging another race of said rail,said rail having a recess formed in said face communicating with apassage extending in the direction of said frame, said passageterminating in an enlarged recess, adjacent said frame; a studprojecting outwardly from the inner iace oit' said lock plate; a bellcrank pivotally mounted onsaid stud, having an elongated arm projectingoutwardly through a slot formed in said flange; a lock bolt slidablymounted in said passage and pivotally connected to the inner end ot saidbell crank, said lock bolt projecting through said enlarged recess andadapted, when in operative position, for extending beyond the surtaceot' said sash rail; a shoulder bearing plate mounted on said frame forengaging said lock bolt; an additional stud projecting 'trom the innerface of said lock plate; a spring mounted on said additional stud lornormally retaining said lock vbolt in operative position; a guide membermounted in said enlarged recess having a bore 'formed therein for thereception ot' said lock bolt, said lock bolt being reduced adjacent oneend for projecting through said bore.

In testimony whereof, I have signed the foregoing.

RICHARD LIST.

